1- Look up the following elements and show their (atomic number, atomic mass, the symbol, number of electrons, protons and neutrons) the elements are Iron, copper, sodium, magnesium, chlorine, fluorine, carbon, hydrogen, oxygen.

An isotope is a variant on an element that has a different atomic weight from other variants. Except for hydrogen —this has only a proton. All atoms of an element have the same atomic number. However, some of the atoms of that element differ in mass number because they have different numbers of neutrons, though they behave identically and have the same number of protons. For example, a nitrogen atom has 7 protons and its common isotope has 7 neutrons while a radioactive isotope of the same element has 9 neutrons! Another example is carbon, where we see three isotopes of the element, Carbon-12, Carbon-13, and Carbon-14 with mass numbers 12, 13 and 14. The atomic number of carbon is 6 so that every carbon atom has 6 protons. The numbers of neutrons of these isotopes are 6, 7 and 8.

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...understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon earlier discoveries by such scientists as Antoine-Laurent de Lavoisier and Stanislao Cannizzaro, the Russian scientist is generally given sole credit for development of the actualperiodic table itself.
The table itself is a visual representation of the periodic law which states that certain properties...

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Period:
1. Name the three particles of the atom and their respective charges are:
a.
b.
c.
2. The number of protons in one atom of an element determines the atom’s
, and the number of electrons determines
of an element.
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...Chemical Nomenclature refers to the naming systems used with chemical formulas. This worksheet focuses on the most basic chemicals and nomenclature systems. Please read the information concerning each problem set and then attempt the problems associated with that information.
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...﻿TITLE: The Elements Author: Theodore Gray Pages: 200
Genre: Non-Fiction Name: Sooraj Shah Date: 1/30/11
Plot Summary: I will be talking about 3 elements in the plot summary because there is no plot in the book. Each page is just talking about an element, so you could start anywhere in the book if you wanted to.
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...almost immune to chemical attack at temperatures below 150 C. Tantalum is virtually resistant to corrosion due to an oxide film on its surface.
Applications
Tantalum finds use in four areas: high-temperature applications, such as aircraft engines; electrical devices, such as capacitors; sirurgical impants and handling corrosive chemicals. It is rarely used as an alloying agent because it tends to make metals brittle. Tantalum resist corrosion and is almost...

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Elements of Gothic Horror
“That truth is that monsters are real, and ghosts are real, too. They live inside us, and sometimes they win.”
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Elements of a High Performance Organization
AJS/512
March 24, 2013
Instructor: Michele Bradford
Developing and maintaining a high performances organization in today society can be challenge, organizations must have responsiveness, speed, and quality that is beyond the reach of individual performance. When the organization has a high performances teams generate commitment and provide the elements that inspire employees to give their very best. need to ensure...